Band saw blade cleaning means

ABSTRACT

A rotary brush means adapted to sweep the cutting edge of a band saw blade and driven by a blade guide roller.

I United States Patent 1151 3,673,903 Evans 1 July 4, 1972 WI BAND SAWBLADE CLEANING MEANS References Cited |72| Inventor: David T. Evans,Three Rivers, Mich. UNITED STATES PATENTS 1,272,892 7/1918 Baur..l43/l58 ux [73} 1 mf'f Three 1,778,053 10/1930 White ..143/1 583,034,387 5/1962 Sebastian. ..83/168 22 Filed; June 1,1970 2,978,0014/1961 Whisler 143/158 3,485,123 12/1969 Komendowski ..83/l68 [21]Appl.No.: 42,156 Primary Examiner-James M. Meister Attorney-TalivaldisCepuritis and Gordon W Hueschen [52] US. Cl ..83/l68, 83/201 .15 57ABSTRACT 151 1111. c1 ..B23d 59 00 [58] Field Of Search ..83/l68,201.15; 143/158 A Mary bmsh means adapted Sweep the edge of a band sawblade and driven by a blade guide roller.

3 Claims, 3 Drawing Figures BAND SAW BLADE CLEANING MEANS v BACKGROUNDOF THE INVENTION In high speed cutting of hard materials, such as metalsor the like, with a band saw, chips generated during cutting sometimeslodge between the teeth of the saw blade and can cause stripping of theteeth. It is an object of the present invention to provide a positiveblade cleaning means which obviates, or at least minimizes,thelikelihood of chip retention on a band saw blade after cutting. It isanother object to provide means for extending blade life. Still otherobjects will become apparent to one skilled in the art upon reference tothe ensuing specification, drawing, and the claims.

SUMMARY OF THE INVENTION The present invention contemplates a rotarybrush means driven by the rotational motion of a band saw blade guideroller. The brush means rotates in a plane substantially normal to theplane of rotation of the guide roller and sweeps chips from the sawblade as it moves past the brush.

BRIEF DESCRIPTION OF THE DRAWING DESCRIPTION OF THE PREFERREDEMBODIMENTS Referring to FIGS. 1 and 2, blade guide rollers and 11 aremounted on yoke 12 by means of angles 13 and 14, respectively. Band sawblade 15 is gripped between guide rollers 10 and 1 l and guided therebyin a conventional manner.

Guide roller 11 is provided with integral hub 16 (FIG. 3) which dependsdownwardly therefrom. Central bore 17 of hub 16 extends axiallytherethrough and communicates with axial bore 18 of roller bearings 19and 20 within guide' roller 11. Gear housing 21 is rotatably mounted onhub 16 which is journaled in sleeve bearing 22 pressed within centralbore 23 of housing 21.

Bevel gear 24 is mounted on hub 16 and held in place within bore 17 bysetscrew 25 which is accessible from outside of housing 21 through asuitable opening (not shown) in the housing wall. Bevel gear 24 alsoretains housing 21 in place on hub 16.

Shaft 25 extends transversely across housing 21 and is journaled inbearings 26 and 27. Bevel gear 28 operably engages gear 24 and isfixedly mounted on shaft 25 by means of setscrew 29. End 30 of shaft 25projects outside of housing 21 and carries rotary brush 31 such as wirebrush or the like, suitably mounted thereon.

Cover plate 32 encloses the gear assembly comprising bevel gears 24 and28 within housing 21 and is held in place in any convenient manner suchas by screws, clips, or the like (not shown).

Inasmuch as housing 21 can rotate about hub 16, arm 33 (FIG. 2)pivotably affixed to yoke 12 with thumbscrew 34, or the like, isprovided and holds housing 21 in position with brush 31 in sweepingcontact with saw blade 15. Screw means 35 in arm 33 bears against coverplate 32 and is utilized to adjust brush 31 to a desired positionagainst blade 15 Guide roller 11 is mounted on angle 14 by means ofthrough bolt 36, washer 37, and nut 38. During cutting, as blade 15moves through guide rollers 10 and 11, these rollers are rotated.Rotation of guide roller 11, in turn, rotates bevel gear 24 which drivesbrush 3] through shaft 25 by means of bevel 28. I 'he foregoingdiscussion and the drawing are intended as i]- lustrative but notlimiting. Still other variations and rearrangements of parts within thespirit and scope of this invention will readily present themselves to askilled artisan.

I claim:

1. Band saw blade cleaning means which comprises a blade guide rollerdriven in a rotational motion directly by the band saw blade; and

rotary brush means drivably connected to said roller, driven by therotational motion of said roller, and rotating in a plane substantiallynormal to the plane of rotation of said roller.

2. Band saw blade cleaning means of claim 1 comprising a blade guideroller provided with an integral hub depending from said roller;

a first bevel gear fixedly mounted in said hub;

a gear housing rotatably mounted on said hub;

a shaft joumaled in said housing and projecting outwardly therefrom;

a second bevel gear fixedly mounted on said shaft within the housing andoperably engaging sad first bevel gear; and

a brush means fixedly mounted on said shaft outside of said housing,driven by said shaft in response to rotation of said blade guide roller,and adapted to sweep a band saw blade guided by said roller.

3. Band saw blade cleaning means in accordance with claim 2 wherein saidhub is joumaled within a sleeve bearing in said gear housing.

1. Band saw blade cleaning means which comprises a blade guide rollerdriven in a rotational motion directly by the band saw blade; and rotarybrush means drivably connected to said roller, driven by the rotationalmotion of said roller, and rotating in a plane substantially normal tothe plane of rotation of said roller.
 2. Band saw blade cleaning meansof claim 1 comprising a blade guide roller provided with an integral hubdepending from said roller; a first bevel gear fixedly mounted in saidhub; a gear housing rotatably mounted on said hub; a shaft journaled insaid housing and projecting outwardly therefrom; a second bevel gearfixedly mounted on said shaft within the housing and operably engagingsad first bevel gear; and a brush means fixedly mounted on said shaftoutside of said housing, driven by said shaft in response to rotation ofsaid blade guide roller, and adapted to sweep a band saw blade guided bysaid roller.
 3. Band saw blade cleaning means in accordance with claim 2wherein said hub is journaled within a sleeve bearing in said gearhousing.